Geographic distribution and description of four pelagic barnacles along the south east Pacific coast of Chile - a zoogeographical approximation

The majority of zoogeographic studies along the Chilean Pacific coast have focused on benthic organisms and oceanographic conditions are considered the main factors influencing their distributions. Herein we examined the geographic distribution of pelagic barnacles of the family Lepadidae collected...

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Autores principales: HINOJOSA,IVÁN, BOLTAÑA,SEBASTIÁN, LANCELLOTTI,DOMINGO, MACAYA,ERASMO, UGALDE,PABLA, VALDIVIA,NELSON, VÁSQUEZ,NELSON, NEWMAN,WILLIAM A, THIEL,MARTIN
Lenguaje:English
Publicado: Sociedad de Biología de Chile 2006
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Acceso en línea:http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2006000100002
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spelling oai:scielo:S0716-078X20060001000022006-04-25Geographic distribution and description of four pelagic barnacles along the south east Pacific coast of Chile - a zoogeographical approximationHINOJOSA,IVÁNBOLTAÑA,SEBASTIÁNLANCELLOTTI,DOMINGOMACAYA,ERASMOUGALDE,PABLAVALDIVIA,NELSONVÁSQUEZ,NELSONNEWMAN,WILLIAM ATHIEL,MARTIN zoogeography Lepas oceanography pelagic Cirripedia The majority of zoogeographic studies along the Chilean Pacific coast have focused on benthic organisms and oceanographic conditions are considered the main factors influencing their distributions. Herein we examined the geographic distribution of pelagic barnacles of the family Lepadidae collected from floating macroalgae at seven sampling areas between 23 and 50° S. Four species were encountered and they are briefly described herein. The most abundant northern species was Lepas anatifera, and it diminished in abundance towards the south (33° S). Moreover, this species was not found in waters with a sea surface temperature (SST) of less than ~18 °C. Lepas australis, primarily a circumpolar West Wind Drift species, diminished in abundance towards the north (33° S). This species was restricted to waters of < 18 °C SST. A third species, L. pectinata, was encountered throughout almost the entire study area, but it was most abundant between 29 and 33° S. The fourth species, Dosima fascicularis, was only found at two sampling areas, namely at 27° S and 33° S, and this is the first record of this species from the central coast of Chile. The distributional pattern of the pelagic barnacles found herein corresponds to the three main zoogeographic regions as revealed by the majority of previous studies based on littoral organisms: the northern Peru-Chilean Province, the southern Magellanic Province, and the central Chilean Transition Zone where the two provinces overlap. Even though the present study only considers four species of pelagic barnacles, the results support the hypotheses on the importance of oceanographic conditions (in particular SST) in determining the zoogeographic patterns along the south east Pacific coast of Chileinfo:eu-repo/semantics/openAccessSociedad de Biología de ChileRevista chilena de historia natural v.79 n.1 20062006-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2006000100002en10.4067/S0716-078X2006000100002
institution Scielo Chile
collection Scielo Chile
language English
topic zoogeography
Lepas
oceanography
pelagic
Cirripedia
spellingShingle zoogeography
Lepas
oceanography
pelagic
Cirripedia
HINOJOSA,IVÁN
BOLTAÑA,SEBASTIÁN
LANCELLOTTI,DOMINGO
MACAYA,ERASMO
UGALDE,PABLA
VALDIVIA,NELSON
VÁSQUEZ,NELSON
NEWMAN,WILLIAM A
THIEL,MARTIN
Geographic distribution and description of four pelagic barnacles along the south east Pacific coast of Chile - a zoogeographical approximation
description The majority of zoogeographic studies along the Chilean Pacific coast have focused on benthic organisms and oceanographic conditions are considered the main factors influencing their distributions. Herein we examined the geographic distribution of pelagic barnacles of the family Lepadidae collected from floating macroalgae at seven sampling areas between 23 and 50° S. Four species were encountered and they are briefly described herein. The most abundant northern species was Lepas anatifera, and it diminished in abundance towards the south (33° S). Moreover, this species was not found in waters with a sea surface temperature (SST) of less than ~18 °C. Lepas australis, primarily a circumpolar West Wind Drift species, diminished in abundance towards the north (33° S). This species was restricted to waters of < 18 °C SST. A third species, L. pectinata, was encountered throughout almost the entire study area, but it was most abundant between 29 and 33° S. The fourth species, Dosima fascicularis, was only found at two sampling areas, namely at 27° S and 33° S, and this is the first record of this species from the central coast of Chile. The distributional pattern of the pelagic barnacles found herein corresponds to the three main zoogeographic regions as revealed by the majority of previous studies based on littoral organisms: the northern Peru-Chilean Province, the southern Magellanic Province, and the central Chilean Transition Zone where the two provinces overlap. Even though the present study only considers four species of pelagic barnacles, the results support the hypotheses on the importance of oceanographic conditions (in particular SST) in determining the zoogeographic patterns along the south east Pacific coast of Chile
author HINOJOSA,IVÁN
BOLTAÑA,SEBASTIÁN
LANCELLOTTI,DOMINGO
MACAYA,ERASMO
UGALDE,PABLA
VALDIVIA,NELSON
VÁSQUEZ,NELSON
NEWMAN,WILLIAM A
THIEL,MARTIN
author_facet HINOJOSA,IVÁN
BOLTAÑA,SEBASTIÁN
LANCELLOTTI,DOMINGO
MACAYA,ERASMO
UGALDE,PABLA
VALDIVIA,NELSON
VÁSQUEZ,NELSON
NEWMAN,WILLIAM A
THIEL,MARTIN
author_sort HINOJOSA,IVÁN
title Geographic distribution and description of four pelagic barnacles along the south east Pacific coast of Chile - a zoogeographical approximation
title_short Geographic distribution and description of four pelagic barnacles along the south east Pacific coast of Chile - a zoogeographical approximation
title_full Geographic distribution and description of four pelagic barnacles along the south east Pacific coast of Chile - a zoogeographical approximation
title_fullStr Geographic distribution and description of four pelagic barnacles along the south east Pacific coast of Chile - a zoogeographical approximation
title_full_unstemmed Geographic distribution and description of four pelagic barnacles along the south east Pacific coast of Chile - a zoogeographical approximation
title_sort geographic distribution and description of four pelagic barnacles along the south east pacific coast of chile - a zoogeographical approximation
publisher Sociedad de Biología de Chile
publishDate 2006
url http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2006000100002
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